Unilateral heel pain, which usually does not need to be alerted to cancer, may be related to trauma, heel spurs, metatarsophalangeal fasciitis, Achilles tendonitis and other causes. 1. Trauma: If the heel is traumatized, causing soft tissue injury, fracture, etc., there will be symptoms of pain. 2. Heel spurs: If the patient suffers from heel spurs, due to the stimulation of local tissues, the symptoms of obvious heel pain will easily occur. 3. Metatarsophalangeal fasciitis: Aseptic inflammation of the heel caused by a variety of reasons, patients will experience heel pain. 4. Achilles tendonitis: If the Achilles tendon is repeatedly stretched, it will easily cause degenerative disease, resulting in swelling and stiffness of the Achilles tendon. When the condition is serious, heel pain may occur. Patients with unilateral heel pain should go to regular hospitals to have relevant examinations in a timely manner, make a clear diagnosis, and follow the doctor’s instructions to adopt appropriate solutions.